Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1978-05-08
1980-03-18
Dorner, Kenneth
Machine element or mechanism
Control lever and linkage systems
Elements
251 95, G05G 506
Patent
active
041933206
ABSTRACT:
A collapsible lever device comprising a main lever mounted on a valve stem extending from the main body of a valve and an auxiliary lever pivoted to the forward end of the main lever. The main lever and the auxiliary lever are provided at the pivoted portion with a lower plate and a contact plate respectively for holding the auxiliary lever in alignment with the main lever. When the auxiliary lever is turned to its unfolded position in alignment with the main lever, the levers provide a single elongated lever. The valve main body has a cover covering the base end of the main lever from above and provided on the edge thereof on the main lever side with an engaging portion in the form of rack grooves, pins or teeth. The auxiliary lever is formed on its upper surface with a pawl engageable with the engaging portion of the cover. A grip lever having a hook at its one end is mounted on the auxiliary lever. When the auxiliary lever is turned to its folded position, the pawl comes into engagement with the engaging portion of the cover to lock the main lever against turning, with the hook in engagement with the main lever to hold the auxiliary lever in its folded position.
REFERENCES:
patent: 728590 (1903-05-01), Linn
patent: 1655473 (1928-01-01), Michaelson
patent: 3329394 (1967-07-01), Overbaugh
Dorner Kenneth
Kubota Ltd.
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